Improvement in plows



2Sheets--Sheet1. JAMES WALLACE.

Improvement in Plows.

No.123,957. PatentedFeb.20,1872.

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2 Sheets--Sheet 2.

JAMES WALLACE.

Improvement in Plows.

N0.123,957, Patented Feb. 20, 1872.

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UNITED STATES PATENT OFFICE.

JAMES WALLACE, OF SHERIDAN, PENN SYLVANIA.

IMPROVEMENT IN PLows.

Specification forming part of Letters Patent No. 123,957, dated February 20, 1872.

To all whom itmay concern:

Be it known that JAMES WALLACE, of Sheridan, in the county of Lebanon and State of Pennsylvania, has invented a new and valuable Improvement in Self- Sharpening Flows; and he does hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawing is a representation of a side view of my plow with the moldboard removed. Fig. 2 is a side view. Figs. 3, 4, 5, and 6 are details. Fig. 7 is a view through the line w at. Fig. 8 is a top or plan view.

My invention has relation to improvements in plows; and it consists in the construction and novel arrangement of devices for-cutting and turning up the soil, hereinafter described, the object being to produce a plow that is durable, and that will give a rolling motion to the soil or earth as it is thrown up from the furrow.

Referring to the drawing, the beam A and handles B are in the usual form. To the under side of the beam A the mold-board D is attached byits shank e, which serves as the standard of the plow. The mold-board is cast with a flanch, D, which is formed with a shoulder and recess on the outside to receive the landside E, with which said flanch is on the same vertical plane. On the inside of said flanch a groove or shoulder, a, is made for the end of the plow-point to bear up against. The shank e is merely a continuation of the metal of the mold-board D and flanch D, conforming to their respective shapes and relative angles; hence a channel or recess is constituted between the flanch and mold-board sides of said shank, which is the receptacle of the head or nut of one of the bolts, by which the moldboard is secured to the beam. These bolts are passed through a flanched cap, D which is formed on top of the shank e, and which fits a recess cut in the imder side of the beam A,

holding the mold-board rigidly. This shank is increased in strength by being made, as described, with two sides,-instead of being a single arm or standard. The mold-board D,

which is cast entire with the supporting-flanch e, is concave on its outer surface from top to bottom, and the curvature increases slightly iL-om the front toward the rear. At the same time a horizontal section of the 1nold-board along its middle portion, will show that its exterior surface in this part is designed to be slightly convex, thus falling away from the wall of the soil as it is raised over the moldboard. The horizontal lines of the extreme upper and lower portions of the mold-board surface are straight. As the soil is raised over the mold-board, it is gradually separated from the middle of the mold-board, while the pressure from the upper overhanging portion thereof is slightly increased, sufficiently to throwthe soil easily from the mold-board to the ground. The cutter and share are attached, respectively, to the front and bottom edges of the mold-board, and they are made in separate pieces, because they are quickly worn out and require to he often renewed. The cutter c is fitted into a recessed seat in the front of the mold-board. It consists of a concave plate, 6, corresponding in curvature with the moldboard, and provided with the cuttingflanch or feather e, which is concave in its upper portion, and gradually changes to the convex profile, which is shown in its lower part. This cutter is secured to the other parts by a bolt, 2, which passes through the plate 6 of the cutter, through the mold-board, point, and inclined flanch of the landside. H represents the diamond-pointed share, which is attached to the lower edge of the mold-board by means of bolts, and extends forward, with. a curvature corresponding to that of the mold-board. E represents the landside. At its forward end it is secured by bolts to the flanch e of the moldboard; and at its rear end it is secured to the end of the plow-handle by suitable bolts passing through this portion, which is strength- .ened by being made of double thickness. The

plate is still further strengthened by means of a small flanch or rib extending inward along its upper edge, and by means of a shoe or flanched base running along its lower edge. The forward portion of this lower flanch or rib is inclined at a suitable angle to receive the plow-point, as shown at g. A staple or loopguard, f, is attached to the landside, and serves to receive the shank of the plow-point and to keep it steady. The plow-point or nose is lettered d. It is placed under the cutter 0 and mold-board. It rests on the inclined portion 9 of the fianeh of the landside, and the shoulder a of the fianch e of the mold-board prevents it from being thrown upward in this part by the action of the soil pressing the point down. The loop fof the landside confines it still further in rear and the edge of the share H also assists in keeping the point in position. The point is made adjustable an d reversible. It is provided with a series of perforations through which the bolt 2 is passed. The rear end of the mold board plate is strengthened by casting thereon or securing thereto the block K, to the inner or plane side of which is secured the end of the plowhandle of this side. W represents a' brace, which is inserted through the ends of the Wooden plowhandles, and, abutting against the metal of the landside E and block K, serves to prevent the mold board and landside from being pressed together and broken.

I claim as my invention The combination and arrangement of the mold-board D, recessed to receive the cutter c, the [ianch D, shouldered and recessed on the outside to receive the landside E, and grooved or shouldered 0n the inside at a to receive the end of the plow-point, and the shank 0, east as an extension of the flanch and mold-board, and provided with a head or cap, D all as described, and for the purpose specified.

In testimony that he claims the above he has hereunto subscribed his name in the presence of two witnesses.

Witnesses: JAMES WVALLAGE.

JOHN H. WILsON, BASSLER BOYER. 

